NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Stereoisomers that are non-superimposable mirror images of each other are known as:
A
anomers.
B
cis-trans isomers.
C
diastereoisomers.
D
enantiomers.
E
geometric isomers.
Explanation: 

Detailed explanation-1: -Enantiomers are defined as a pair of stereoisomers that are non-superimposable mirror images of one another. This means they are molecules that are made up of identical atoms, bonded together in the same way, i.e. they have the same connectivity.

Detailed explanation-2: -Enantiomers are stereoisomers that are non-superimposable mirror images. A molecule with 1 chiral carbon atom exists as 2 stereoisomers termed enantiomers (see the example below).

Detailed explanation-3: -Enantiomers are stereoisomers that are non-superimposable mirror images, meaning that one enantiomer will be the mirror image of the other enantiomer. In order to draw an enantiomer, you can determine the stereocenter, then swap the two groups attached to the stereocenter.

Detailed explanation-4: -The definition of diastereomers is simple: if two molecules are stereoisomers (same molecular formula, same connectivity, different arrangement of atoms in space) but are not enantiomers, then they are diastereomers by default.

Detailed explanation-5: -Enantiomers are non-superimposable mirror images of each other. Enantiomers are mirror images of each other which are known as stereoisomers. Diastereomers are also non-superimposable but are not mirror images of each other. Diastereomers are not mirrored images of each other which are known as stereoisomers.

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